Source : Webster's Revised Unabridged Dictionary (1913)

Parasphenoid \Par`a*sphe"noid\, a. [Pref. para- + sphenoid.]
   (Anat.)
   Near the sphenoid bone; -- applied especially to a bone
   situated immediately beneath the sphenoid in the base of the
   skull in many animals. -- n. The parasphenoid bone.